guppy eggs eh?
Never seen them before, but the clowns will probably take on the fry. The clowns could be in there for a short while, but they will need an upgrade. They are slow growers IMO, but they do get huge eventually, so take that into an account. They also like being in shoals of at least 4-5, the more the better. Is there any reason you want them? Kuhli loaches stay smaller and are neat in my mind.